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A biochemistry student wants to make an acidic buffer with pH of 4.20. hey will start with 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. Acetic acid has a pka of .75. There are two ways to make this buffer. .1 The student is given 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. What mass in g) of sodium acetate (NaC,H,O,: 82.03 g/mol) should they add to make this a solution with H of 4.20? Round your answer to 3 significant digits. Assume that dissolving the solid will not hange the volume of the solution. g of Nac,H,O, 2 The lab is currently out of sodium acetate. A friend suggests using sodium sydroxide. How does adding sodium hydroxide to an acetic acid solution make a buffer olution? Explain using a chemical equation. No calculation needed.

A biochemistry student wants to make an acidic buffer with pH of 4.20. hey will start with 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. Acetic acid has a pka of .75. There are two ways to make this buffer. .1 The student is given 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. What mass in g) of sodium acetate (NaC,H,O,: 82.03 g/mol) should they add to make this a solution with H of 4.20? Round your answer to 3 significant digits. Assume that dissolving the solid will not hange the volume of the solution. g of Nac,H,O, 2 The lab is currently out of sodium acetate. A friend suggests using sodium sydroxide. How does adding sodium hydroxide to an acetic acid solution make a buffer olution? Explain using a chemical equation. No calculation needed.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A biochemistry student wants to make an acidic buffer with pH of 4.20. They will start with 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. Acetic acid has a pka of 4.75. There are two ways to make this buffer. 1.1 The student is given 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. What mass (in g) of sodium acetate (NaC,H,O;: 82.03 g/mol) should they add to make this a solution with pH of 4.20? Round your answer to 3 significant digits. Assume that dissolving the solid will not change the volume of the solution. g of Nac,H,O; 1.2 The lab is currently out of sodium acetate. A friend suggests using sodium hydroxide. How does adding sodium hydroxide to an acetic acid solution make a buffer solution? Explain using a chemical equation. No calculation needed.
Transcribed Image Text:A biochemistry student wants to make an acidic buffer with pH of 4.20. They will start with 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. Acetic acid has a pka of 4.75. There are two ways to make this buffer. 1.1 The student is given 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. What mass (in g) of sodium acetate (NaC,H,O;: 82.03 g/mol) should they add to make this a solution with pH of 4.20? Round your answer to 3 significant digits. Assume that dissolving the solid will not change the volume of the solution. g of Nac,H,O; 1.2 The lab is currently out of sodium acetate. A friend suggests using sodium hydroxide. How does adding sodium hydroxide to an acetic acid solution make a buffer solution? Explain using a chemical equation. No calculation needed.
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